Customer relationship management (CRM) is a business strategy that focuses on creating value for customers over the long term by managing interactions and relationships. However, CRM models face challenges like complexity, usability issues, and security concerns. CRM developed in response to shifts in business power toward customers in the 1980s, when supply exceeded demand and sellers had little pricing control. The benefits of CRM include reduced costs, increased customer satisfaction, organizational focus on external customers, customer growth, and long-term profitability.